Singapore’s Triyards Holdings has extended its product range to include escort tugs, and clinched a new deal to deliver four of the tugs to marine craft group Greenbay Marine.

Worth some $12.8m, the contract is for four RAstar 3400 Azimuth Stern Drive Tugs, and they are expected to be delivered by early 2017. The tugs will be designed for escort operations in adverse sea and weather conditions.

“We will continue to execute our product and sector diversification strategy to build a diversified orderbook,” said Chan Eng Yew, ceo of Triyards, an engineering, fabrication and ship construction unit of Ezra Holdings.

At at October 2015, Triyards sat on an orderbook of $564m comprising nine liftboats, two multi-purpose support vessels, three chemical tankers, a variety of aluminum craft, a FPSO vessel turret as well as two industrial fabrication projects, all in various stages of construction.